Re: [linux-sunxi] [PATCH v6 11/13] ARM: dts: sun8i: add DE2 nodes for V3s SoC

From: icenowy
Date: Fri May 05 2017 - 04:53:49 EST

å 2017-05-05 11:31ïChen-Yu Tsai åéï
On Thu, May 4, 2017 at 7:48 PM, Icenowy Zheng <icenowy@xxxxxxx> wrote:
Allwinner V3s SoC features a "Display Engine 2.0" with only one TCON
which have RGB LCD output.

Please also mention that it only has one mixer.

For the subject, you could just say "Add device nodes for the display pipeline".


Add device nodes for it as well as the TCON.

Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx>
---
arch/arm/boot/dts/sun8i-v3s.dtsi | 87 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 87 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
index 71075969e5e6..0a895179d8ae 100644
--- a/arch/arm/boot/dts/sun8i-v3s.dtsi
+++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
@@ -41,6 +41,10 @@
*/

#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/sun8i-v3s-ccu.h>
+#include <dt-bindings/clock/sun8i-de2.h>
+#include <dt-bindings/reset/sun8i-v3s-ccu.h>
+#include <dt-bindings/reset/sun8i-de2.h>

/ {
#address-cells = <1>;
@@ -59,6 +63,12 @@
};
};

+ de: display-engine {
+ compatible = "allwinner,sun8i-v3s-display-engine";
+ allwinner,pipelines = <&de2_mixer0>;
+ status = "disabled";
+ };
+
timer {
compatible = "arm,armv7-timer";
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
@@ -93,6 +103,83 @@
#size-cells = <1>;
ranges;

+ de2_clocks: clock@1000000 {
+ compatible = "allwinner,sun50i-h5-de2-clk";

I am a bit skeptical about this. Since the V3S only has one mixer, do the clocks
for the second one even exist?

It's described in the de_clock.c in the BSP source code, and in hardware
these bits can be really set (although without clock output).

So I use this compatible which has still the extra clocks.


+ reg = <0x01000000 0x100000>;
+ clocks = <&ccu CLK_DE>,
+ <&ccu CLK_BUS_DE>;
+ clock-names = "mod",
+ "bus";
+ resets = <&ccu RST_BUS_DE>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ };
+
+ de2_mixer0: mixer@1100000 {
+ compatible = "allwinner,sun8i-v3s-de2-mixer";
+ reg = <0x01100000 0x100000>;
+ clocks = <&de2_clocks CLK_MIXER0>,
+ <&de2_clocks CLK_BUS_MIXER0>;
+ clock-names = "mod",
+ "bus";

Nit: could you list the bus clock first?

Regards
ChenYu

+ resets = <&de2_clocks RST_MIXER0>;
+ assigned-clocks = <&de2_clocks CLK_MIXER0>;
+ assigned-clock-rates = <150000000>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mixer0_out: port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ mixer0_out_tcon0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&tcon0_in_mixer0>;
+ };
+ };
+ };
+ };
+
+ tcon0: lcd-controller@1c0c000 {
+ compatible = "allwinner,sun8i-v3s-tcon";
+ reg = <0x01c0c000 0x1000>;
+ interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_TCON0>,
+ <&ccu CLK_TCON0>;
+ clock-names = "ahb",
+ "tcon-ch0";
+ clock-output-names = "tcon-pixel-clock";
+ resets = <&ccu RST_BUS_TCON0>;
+ reset-names = "lcd";
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tcon0_in: port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ tcon0_in_mixer0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&mixer0_out_tcon0>;
+ };
+ };
+
+ tcon0_out: port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+ };
+ };
+ };
+
+
mmc0: mmc@01c0f000 {
compatible = "allwinner,sun7i-a20-mmc";
reg = <0x01c0f000 0x1000>;
--
2.12.2

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